Improvement in earth-augers



rrE STATE PATENT OFFICE GEORGE G. COLLINS, OF PHILO, ILLINOIS.

IMPROVEMENT IN EARTH-AUGERS.

Specification forming part. of Letters Patent No. 187,705 dated February 27, 1877 application filed August 4, 1876.

.To all whom #may concern.'

Beit known that I, GEORGE G. COLLINS, of Philo, Champaign county, Illinois, haveinvented a new and useful Improvement in Earth-Augers, of which the following is a speciiication, reference being had to the annexed drawings.

The invention relates to an improved earthauger, as hereinafter n-.ore fully described, its object being to provide a device for boring holes of any desired size.

Figure lis a perspective view of' a device embodyingtheelementsot'theinventon. Fig. 2 is a central vertical longitudinal section ot' same. Fig. 3 is a top view, and Fig. L bottom view, of same.

Ain the accompanyingdrawings represents a shaft, to the lower end of which is firmly secured the anger-point B, having upon its opposite lowest flanges the bits D iirmly secured. At a proper distance above the bits D there is anenlargenient or shoulder, E, formed upon the edge ot' the [lange of the point B, to which is rigidly secured the bit F. Thus the augerpoint B is provided upon four sides with 'bits, which operate on increasing circles. Above the point B is placed, movably upon the rod ,A, a section, H, connected by the plates I on opposite sides lo the upper parts of the point B. The flange of the section H exceeds in diameter that of the bit B, so that a shoulder, L, is formed at thejunction of the bit and section, whereon is provided another bit, M, which operates on a larger circle than the bit F below.

It is obvious that any number of shoulders with bits on them may be constructed, and that, by the addition ot' sections, the length of the auger may be indefinitely extended.

To the upper ends ofthe llanges of the section H is secured one end of' a valve, N, having an upward action, its edges impinging against the interior of the slush-box P, which fits upon the upper end ot' the section H, being' secured thereon by the pills R, which enter the edge of the liange. Thus, as the device descends, the water, loose earth, sand, slush, and other matter passes up under the valve in the box k, and mayV then be drawn ont, as the valvesV N closing downward pre- -vent the escape of any matter within the box as the auger is being withdrawn. The upper edges of the box P are connected by the brace T, having at its center an angular aperture to receive the shaft A, anda set-screw, V, so that the brace T moves with the shaft. Above the braceT, and similarlyr provided with reference to the shaft A, is placed the bar W, having the transverse cutters X arranged to throw the dirt toward the shaft A, this part of the device being used to enlarge the aperture formed by the bits and mechanism below.

What I claim as my invention isl. The combination, on a shaft, of an earthauger i'ornledsin sections, which increase in diameter, substantially as shown and described.

2. The auger-end A, having the bits D and shoulders E and bits F, substantially as specied.

3. The section H, connected with the auger end A, and provided with the shoulder L and bit M, substantially as set forth.

4. The bar W, having the transverse cut ters X, operating to throw the earth, sand, and other loosened matter toward the shaft A, substantially as expressed and shown.

ln testimony that I claim the foregoing im-A 

